321023013332 has 72 divisors (see below), whose sum is σ = 667167580800. Its totient is φ = 134732297280.

The previous prime is 321023013323. The next prime is 321023013347. The reversal of 321023013332 is 233310320123.

It is a junction number, because it is equal to n+sod(n) for n = 321023013298 and 321023013307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1996073 + ... + 2150895.

It is an arithmetic number, because the mean of its divisors is an integer number (9266216400).

Almost surely, 2^321023013332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321023013332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333583790400).

321023013332 is an abundant number, since it is smaller than the sum of its proper divisors (346144567468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321023013332 is a wasteful number, since it uses less digits than its factorization.

321023013332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155061 (or 155052 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 321023013332 its reverse (233310320123), we get a palindrome (554333333455).

The spelling of 321023013332 in words is "three hundred twenty-one billion, twenty-three million, thirteen thousand, three hundred thirty-two".